Rolling-machine.



HADFIELD Iz-W. KUHLUIMLv ROLLING MACHiNE.

APPLICATION mm mw la. 1ers.

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remesa To all whom it may concern Be `it known that we, FREDERICK Han- FIELD and WILLIAM KUHLri-IAU, citizens of .the United States,` residing at Millville and Blackstone, respectively.I in the county of l/Vorcester and State of lvlassachusetts, have invented certain new and useful Improven ments in Rolling-Machines, of which the following is a full, clear, and exact description.

This invention relates to rolling machines, and has for an object to provide a machine for rolling reinforcements upon materials to be used in the manufacture of rubber articles, more particularly rubber boots.

vIn the manufacture of rubber boots, it has been found that while undergoing vulcanization, particularly under the dierential of pressure process cure, separation of some or the rubber parts takes place. To prevent this, it is necessary that such parts be rolled down forcibly into intimate contact with each other so that the raw rubber surfaces of the parts will be worked together. To acfrom the following description read in con nection with the accompanying drawing, in which- Figure 1 is a front elevation of a rolling n machine constructed in accordance with the invention. Fig. 2 is an end elevation of the machine. Fig. 3 is a plan view showing the boot skirt and knee patch ready for rolling.

lReferring now. to the drawing, in which like characters ofreference designate similar parts, 1() designates the frame o t the machine. Superposed rollers '11 and 12 are journ'aled in suitable bearings on the frame, the upper roller being considerably shorter than the lower roller so that only that por- 'tion of the rubber boot skirt 1? to whicli'the rubber reinforcing patch 14 is to be applied, will be 'pressed between the rollers. The

i Specification of Letters Patent.

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by meshing gear wheels -21 and 22 from a drive shaft 23. A4 friction clutch-24 and pedal 25 serve to connect and disconnect the drive shaft from a drive pulley 26.

To support the rubber materials in iat condition during the rolling operation and thus minimize distortion of the soft raw rubber, a table 27 is supported bythe frame in horizontal position, and is provided with an opening 28 to permit the upper portion of the lower vroller 12 to project slightly.

through it. f

' "ln order to keep the raw rubber parts clean and free from contamination by any substance which might later prevent proper .idhesion of the parts with contiguous parts of the boot while the same is being built and vulcanized, a conveyor belt- 29 is trained overidlers 30 upon the ends of the table, and passes between the rollers, the belt being supported in flat condition by the table and being frictionally pressed against the projecting upper portion of the lower roller by the material being rolled. The belt thus is ,frictionally driven by the lowerI roller, rst

in one direction and then in the reverse direction and supports and carries the rubberl parts back and forth a number of times bethe raw rubberreinforcing patch 14:, arel superposed to lightly adhere to each other,

and the product is then placed upon the conveyor belt with the patched portion of the skirt lying between the rollersll and 12 and with 'the main portion of the skirt lying beyond the end of the upper roller 1l. The

machine is now started, whereupon the'rollers will be rotated and then the rotation thereof reversed so ythat the belt, which as l'above stated bears upon and is frictionally driven by the lower roller 12, will support and carry the rst in one direction and then in the' reverse direction until the conteoting raw rubber surfaces of the patch and skirt tre Worked together by the pressure of the rollers, The niaehine is then'stopped and the rolled product removed9 Having thus described our invention, what weelaim' es new and desire to protect by Letters `Patent is:-

L A rolling machine comprising rollers' .disposed opposite each other, means for rotilting v:metl then reversing rotation of the rollers, and a conveyerbelt between the rollers ,for supporting the materials operated upon by the rollers.

A rolling maeliine comprising rollers' disposed opposite each other, meansl for ro.- tatlng and reverslngrottlon of the rollers,

4in the reverse direction,

and eonveyer belt between the roller frietonelly driven by one ofthe rollers to Support and carry the materials operated upon by the rollers first in one direction and then 3. A rolling machine comprising rollers disposed one above the other, means for roterting and reversing-rotation of the: rollers, e table through which the upper portion of fthe lower roller projects, and a conveyor belt S III )pOI'tedl in flat condition by the table and frietionally driven by Contact with the ugr per portion of the lower roller. Y

FREDERICK lHADFIELD WILLIAM KUIILTHU 

